﻿using System;
using System.Collections.Generic;
using System.IO;

using System.Text;
using System.Net;
using System.Net.Security;

public class HttpHelper
{
    public static string Post(string url, string paramData)
    {
        return Post(url, paramData, Encoding.UTF8);
    }

    public static string Post(string url, string paramData, Encoding encoding)
    {
        string result;

        if (url.ToLower().IndexOf("https", System.StringComparison.Ordinal) > -1)
        {
            ServicePointManager.ServerCertificateValidationCallback =
                           new RemoteCertificateValidationCallback((sender, certificate, chain, errors) => { return true; });
        }

        try
        {
            var wc = new WebClient();
            if (string.IsNullOrEmpty(wc.Headers["Content-Type"]))
                wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
            wc.Encoding = encoding;

            result = wc.UploadString(url, "POST", paramData);
        }
        catch (Exception e)
        {
            throw;
        }

        return result;
    }

    public static string Get(string url)
    {
        return Get(url, Encoding.UTF8);
    }

    public static string Get(string url, Encoding encoding)
    {
        try
        {

            ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;
            ServicePointManager.ServerCertificateValidationCallback = new
RemoteCertificateValidationCallback
(
   delegate { return true; }
);
            var wc = new WebClient { Encoding = encoding };
            var readStream = wc.OpenRead(url);
            using (var sr = new StreamReader(readStream, encoding))
            {
                var result = sr.ReadToEnd();
                return result;
            }
        }
        catch (Exception e)
        {
            throw e;
        }
    }
}